In reading some of the posts on another thread it seems many of you who want your bunnies to have a nice area to live/play/exercise would benefit from my accidental discovery: Several years ago I raised and showed Jack Russell Terriers. In the pursuit of this, we built a practice Go-To-Ground for them. This was the 'beginner' size. We dug a trench about 12"-18" deep about ten to twelve feet long with a 90 degree turn, put in a top & sides of plywood, then recovered with dirt, leaving both ends accessable for the dogs to run in and out. Later, (after I quit Jack Russells) we installed a pond, put more dirt over the top of the go-to-gound for flowers, and would turn our bunnies loose. They LOVED it in there!! Now, I did not have them loose all the time because this was also my square foot garden area as well... BUT... it was a nice way for the bunnies to hang out.. and PERHAPS if they had been there ALL the time.. I could have gotten to the babies if need be??? OH... around the middle turn of the go-to-ground we made a hinged lid area (just in case of a stuck dog... never happened) I'm thinking of doing this again so I can have some loose bunnies. Wonder if they'd use THAT instead of burrowing everywhere???